Greater London · London and the South East
Northwick Park Thermal Roof Survey
Find out the condition of the roof at your property in Northwick Park. We visit on weekdays and at weekends.
- Leaks far from where the stain appears
- Thin or uneven insulation in the roof
- Cold areas below the roof
How it works
Where it is relevant and can be reached safely, the loft space is checked as well as the outside. Inside, we look for staining, damp, gaps and signs of movement. All in, the survey normally takes about one to two hours for most homes, plus time to check any thermal findings with moisture readings. In Northwick Park, as in much of London, plenty of properties are flats or terraces without side access, so the back of the roof is often seen from upstairs windows, from inside or, where a flight is allowed, from the air. Mention any building rules, key holders or managing agents when booking.
- We talk through the roof, any damp or leaks, and the weather expected on the day.
- We check the roof from ground level, from windows and from the roof itself where it is safe.
- We take thermal images of the roof to pick up temperature patterns.
- We check the patterns that stand out with moisture readings where there is safe access.
- You get a report with thermal images, photos and our recommendations.
Preparing for the visit
- Jot down any questions you want answered
- Leave side gates unlocked
- For a flat or shared roof, check access with the freeholder or managing agent
How to book
To get a price for thermal roof surveys in Northwick Park, ring 07833 053749 or drop us an email. Some details about the property and the roof help us price the survey accurately.
Related advice
Thermal roof survey in Northwick Park
Thermal imaging is often most useful on flat roofs, from small extensions to large commercial roofs. Patterns can suggest where water is trapped under the covering. Pitched roofs with slates or tiles are frequently harder to read, because of the air space beneath, so we also look from the loft where we can reach it safely. We survey flat roofs, commercial roofs and insulated roof spaces, and people most often book us about possible trapped moisture under a flat roof covering and stains that keep coming back.
London’s roofs are frequently hard to see from the street: valley gutters behind parapets, dormers and flat-roofed rear additions. That is where a view from the air or a thermal camera helps, by showing what can’t be reached safely. Weather on the day decides whether it goes ahead, in Northwick Park as anywhere. What a thermal image shows is temperature, so anything that looks like moisture is checked with a meter.
After the visit, you get a written report with photos, sent by email. It sets out the condition of the roof, any defects and our written recommendations.
- Location
- Northwick Park (HA1, HA3, HA0)
- Region
- Greater London
- Cost
- From £400 inc. VAT
- Your report
- Written, with photos, emailed to you
- Appointments
- Weekdays, Saturdays and Sundays
- Insured
- PI and public liability insurance
- Call
- 07833 053749
- Updated
- 27 October 2026
Nearby places to Northwick Park
What else we do in Northwick Park
What a survey costs
What a survey costs depends on the time and equipment it needs. That comes down to:
- The package you choose: Basic, Standard or Premium
- The size of the roof
- Features like valleys, chimneys, dormers and parapets
- The type of building, from a house to a block or an office
One thing that affects the price is the package: Basic from £150, Standard from £250 or Premium from £400, all with VAT included. Size, height and access can affect the price too.
Getting in touch
What helps most when you contact us:
- Where any leaks, stains or damp patches show inside
- Photos of the roof, taken safely from the ground or a window
- How the loft is reached, if there is one
- Why you want a survey: buying, a leak, a storm or new work
If you have photos of the roof, send them over. Take them safely from the ground or a window; never climb up to get a better view. To get started, ring 07833 053749 or drop us an email.
How the survey changes by roof type
Loft insulation
Loft insulation is easily disturbed when people store things or run cables. The camera can show where it no longer covers the ceiling.
Single-ply and EPDM roofs
Because these membranes are thin, patterns from below frequently show. Shiny surfaces can reflect heat, so we take care reading the images.
DIY checks: what’s safe
Fresh stains on ceilings or walls after rain are worth noting. Take a photo and write down when you saw it, which helps when we check the roof.
You can learn a lot from the ground. Binoculars help you spot slipped slates or tiles, gaps along the ridge and a leaning stack. Never climb onto the roof to look.
Drones, thermal imaging and Northwick Park roofs
Further from the centre, London’s housing takes in interwar semis with hipped roofs in clay or concrete tiles as well as slate-roofed terraces. If your home in Northwick Park is one of them, bay roofs, hips and later dormers each have their own details. Older coverings on steep or tall roofs are hard to judge from below, so close-up aerial photos and thermal images help. If your survey includes the drone, the flight is checked against the Drone Safety Map first.
Take an older house close to Saint Cuthberts Church: tall stacks and steep slopes are easier to judge with close-up aerial photos than from the pavement. Controlled parking zones are common in London, so mention any permit rules for Northwick Park. Anyone responsible for a site like Harrow High School will know that a drone or thermal camera can show a large roof in a single visit.
Northwick Park is about 1 mile south-west of Kenton, in Greater London. We provide thermal roof surveys for householders, landlords and businesses in Northwick Park. Our area takes in places right across Greater London. Our London page covers surveys nearby.
All of HA1, HA3 and HA0 is covered for thermal roof surveys, from the main roads to the quietest streets. We offer thermal roof surveys to properties on Lyon Road, Manor Road and Gayton Road and the roads around them. You’ll find Northwick Park on the A404, so it’s easy for us to get to. Neighbouring places we cover for thermal roof surveys include Greenhill (1 mile north-west), Harrow on the Hill (1 mile south-west), South Kenton (1 mile east), Kenton (1 mile north-east) and Harrow (1 mile west). We also work in nearby towns such as London (11 miles south-east), City of Westminster (9 miles south-east), Marylebone (9 miles south-east), Kensington (7 miles south-east), St Pancras (10 miles east) and Shoreditch (11 miles east).
Near you in Northwick Park
Locally, jobs take us to homes and businesses close to St Anselm's Catholic Primary School, Orley Farm School and Preston Park and the streets around them. Northwick Park’s nearest station is Kenton station, about 0.6 miles north-east. Nearby you’ll also find Northwick Park Hospital (less than half a mile north-east) and Kodak Museum (1.5 miles north-west). For a walk, there’s Masons Field and Northala Fields.
Rented homes, blocks and businesses
Landlords and agents in Northwick Park book surveys as well as householders. The report gives you a dated record of the roof, with photos, useful for planning maintenance.
Surveys can also be booked by buyers’ agents acting for a client. Reports are emailed, so they’re easy to pass on.
Useful tips for Northwick Park property owners
Getting the most from a thermal roof survey starts before we arrive and carries on afterwards. Tips:
- Keep dated photos of any marks on ceilings
- Ask us about the forecast if rain is expected
- Use the report as a baseline for later checks
- Keep outlets and gutters clear to stop water sitting
Buyers can use the findings when talking to the seller or agent. What you do with it is up to you, whether that is asking for work or discussing the price.
Make sure loft insulation covers the whole area and hasn’t been disturbed. Gaps frequently appear after work in the loft.
Questions from Northwick Park
Will parking be an issue for a roof survey in Northwick Park?
Parking in Northwick Park, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot.
Is drone flying allowed in Northwick Park?
Typically it comes down to two things: the airspace at the address and the weather. London’s airspace includes flight restriction zones around Heathrow, London City Airport and London Heliport, and restricted areas over Hyde Park, the City of London and the Isle of Dogs. Each address is checked against all of them before the drone goes up. Before any flight, we check the Drone Safety Map for airspace restrictions, including zones around airports and prisons. A small drone cannot fly safely in high wind or heavy rain, though the rest of the survey goes ahead either way.
Do you climb onto every roof?
Only if it is safe. We inspect what can safely be seen: from ground level, from windows and vantage points, from the roof space, from the roof itself where safe and by drone where it applies. Anything we cannot see is noted in the report.
Are you insured?
We hold professional indemnity and public liability insurance, for every survey we carry out.
What can thermal imaging tell me about my roof?
A thermal camera shows differences in surface temperature. Those patterns can point to trapped moisture, missing insulation or heat loss. Findings are checked with moisture readings.
How long have you been surveying roofs?
Over 20 years and more than 5,000 surveys, across London and South East England.
Do you work in Northwick Park?
Yes, we do. Northwick Park is part of the area we cover, and the service is the same as everywhere else we work.